Two angles are considered to be **adjacent angles** if they have a common vertex, share a common side but don't contain common interior points, meaning they don't overlap in any way.

The following figures are examples of angles that are **NOT** adjacent.

The angles below are **not adjacent angles** because although they have a common vertex, they don't share a common side.

The angles below are **not adjacent angles** because although they share a common side, they don't have a common vertex.

The angles below are **not adjacent angles** because they overlap.